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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.reflect.*;
  5. import java.lang.*;
  6. import java.io.*;
  7.  
  8. /* Name of the class has to be "Main" only if the class is public. */
  9. class Ideone
  10. {
  11. 	public static void main (String[] args) throws java.lang.Exception {
  12.  
  13.  
  14. List<Data> allItems = new ArrayList<>();
  15. allItems.add(new Data("x", "y", "z"));
  16. allItems.add(new Data("x", "y", "a"));
  17. allItems.add(new Data("x", "y", "b"));
  18. allItems.add(new Data("x", "y", "c"));
  19. allItems.add(new Data("x", "d", "z"));
  20. allItems.add(new Data("e", "y", "z"));
  21. List<Data> filtered = new ArrayList<>();
  22. Map<String,String> propertyMap = new HashMap<>();
  23. propertyMap.put("getA", "x");
  24. propertyMap.put("getB", "y");
  25. for (Data d : allItems) {
  26.     boolean allPass = true;
  27.     for (Map.Entry<String,String> entry : propertyMap.entrySet()) {
  28.         Method m = d.getClass().getMethod(entry.getKey());
  29.         if (m == null || !entry.getValue().equals(m.invoke(d))){
  30.             allPass = false;
  31.             break;
  32.         }
  33.     }
  34.     if (allPass) {
  35.         filtered.add(d);
  36.     }
  37. }
  38. for (Data d : filtered) {
  39. 	System.out.println(d.getA()+"-"+d.getB()+"-"+d.getC());
  40. }
  41.  
  42.  
  43. 	}
  44. }
  45.  
  46. class Data {
  47. 	String a;
  48. 	String b;
  49. 	String c;
  50. 	public String getA() {
  51. 		return a;
  52. 	}
  53. 	public String getB() {
  54. 		return b;
  55. 	}
  56. 	public String getC() {
  57. 		return c;
  58. 	}
  59. 	public Data(String a, String b, String c) {
  60. 		this.a = a;
  61. 		this.b = b;
  62. 		this.c = c;
  63. 	}
  64. }
Success #stdin #stdout 0.1s 320576KB
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x-y-z
x-y-a
x-y-b
x-y-c
https://ideone.com/K4hw1z
language:
Java (HotSpot 12)
created:
9 years ago
visibility:
public

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